Nowadays, information security is more important issue for reliable data transfer. A cryptographic method is widely used to ensure the security of data. To keep the information from being hacked by the other party, data is encoded by using this method. To meet these requirements the implementation of the Blowfish algorithm in the commercial FPGA has can be used to obtain high performance of such FPGA based reconfigurable systems. This paper presents, how such a system can be used to enhance the speed of cryptographic computation. By using FPGA design, the Blowfish computation can be increased in speed. In this, Xilinx software is used for the analysis purpose. The results will lead to the general conclusion that the use of an FPGA coprocessor is ideally suited for the execution of cryptographic algorithms regarding execution time and flexible usage. The performance is analyzed in terms of its architecture, speed, throughput, and encryption time
